|Dantes View at Death Valley National Park|
The rocks of Death Valley record an unusually complete history extending from the early Proterozoic eon as much as two billion years ago to rocks that formed only a few centuries ago. It's hard to imagine a better place for teaching geology, and that's what I was doing over the last couple of days.
|I bet no one has ever thought of taking a picture from this particular spot before!|
|Some of the oldest rocks in the American west, metamorphosed around 1.7 billion years ago.|